Augustus f



(No Model.)

. A. F. NAGLE.

AUTOMATIC SPRINKLER.

' No. 44'7;O04. Patented Peb. 24,1891.

nii'rnn STATES .n'cUs'rL-'s F. NAeLn, oir cino-neo, ILLiNoIs, Assienon rro 'THE NAGLE .iinoimoio sPnINKLnn COMPANY, on sans PLACE.

SPRlNKLER.

SFECIFICATION forming part of Letters Patent No. 447,004, dated February 2'4, 1R91. I

i .Application filed Octoberoll, 1890. Serial No. 367,812. (No model.)

1"() all 707mm/ it 'may concern: I

3e it known that I, AUGUSTUS F. NAGLE, a citizen ot the United States, residing at Chicago, in the countyol Cook and State ot' Illinois, have invented vcertain new and useful Improvements in Automatic Sprinklers,which are fully set forth in the following specication, reference being had to the accompanying drawings, in which- Figure l represents a plan of a sprinkler embodying my invention; Fig. 2, a side eleration of the same; Fig. 3, a vertical section of the same, taken on the line 3 3 of Fig. l; Fig. l, a detail plan section taken on the line i 4 of Fig. 3; Fig. 5, an edge elevation of the fastening-link detached; Fig. G, a side elevation`of the same; and Fig. 7, a section of the same, taken on the line 7 70E Fig. 5. Figs. 1 and 2 offthe drawings are upon one scale, and the remaining iigures upon another and enlarged scale.

M y in vention relates to the sprinklers which are employed in automatic lire-extinguishing apparatus, and which, as is Well known, are applied to the distributing-pipes in the rooms ot' a building and are closed by devices which are automaticallyreleased by the heat produced by-a fire.

The invention consists in certainspecial fastening devices for holding the nozzle. cap or valve in its normal position, and also in a light spring arranged to assist inthe removal of this cap when released by the breaking 'of the fastening devices.

I will describe in det-ail the construction.,r and operation of a sprinkler embodying my invention in practical form, and will then point out-definitely in claims the specialimprovements which I believe to. be new and wish to secure by Letters Patent.

The sprinkler to which' my' improvements are applied, and which is shown in the drawings, is in all its main features of known construction,`and hence requires only brief:l description ofthese main parts in the present instalme. f

In the, drawings-A '.repiresents the main portion or body of the sprinkler, which is adapted' toghe secured` in the pipes in the usual way. This 'partyI of the device contains in' Figs. 2 and 3.

a central nozzlea and branching arms a. a2, whichextend outward and upward from opposite sides, respectively, ot the central portion. The nozzle is closed by an outer ca p or valve B, t-he head of which fis provided .with a threaded recess b, in which is fitted a screw-pin C, and when the parts are in place,

as seen in Fig. 3, a lever D passes across the outer end of this pin, and, being 'fastened at its respective' ends, thereby holds the cap in place upon the nozzle. The inner end of this lever is caught under anotch as at the extremity of the arm a'and a slight recess d is made at this end ot the lever itself; so as to provide a knife-edge bearing between the-lever and arm. 'lhe'outer end of the screw-pin C ispreferablyconical, auditsl seat in the' lever D is then similarly shaped, this'construction being for the purpose of facilita-ting' the turning of the screw-pin to properly adjust the parts for closing the nozzle. The outer end of the lever D is connected to the arm a by an`open link E, the upper or closed end ot which isY passed over 'the outer'end of the lever, while the lower end is secured to the arm, as will now be described. 'lhe arm a. is forked or branching at the side, as seen in Fig. 3,-and the ends of these forks project within the link when in operative position. The lower' arm of this fork is cut away so as to provide a narrow ledge or scat u* at its lower extremity, as seen The free ends of the open link ,E are bent outward and upward slightly, so as to provide on each a smallplane sui'- face or seat e, as seen in Fig. 5. When these parts are in the position Afor fastening the cap to the nozzle, the link looping over the outer end of the iever extends' down about even with `the lower portion of the arm a,`and the latter projects within the former sufficiently to bringithe narrow ledge or scato. just outside t'he plane oi the lin k,the latter being arranged with its bent projections in front., as

seen in Figs. 2 and, In this position the link is secured in place by means of two small plates F'and G, The lower plate Fis pro- .vided with a notch f: Ain its lower end, which receives the projecting seat a* ofthe' arm, s that on each side of the latter this plate F is seated on the projections e at the lower ends of the link. The upper edge of this plate is plane,as seen in Figs. 3 and 5, and the upper' plate (l rests thereon, its lower edge o being beveled on eaeh side to proviffle a central.

knife-edge for its hearing on the upper end of the plate l". 'lhe upperend of this plate G provided with an outer bevel g', so as to provide a knife-edge at its extremeinner line, which is fitted under the upper member of the fork on the arm a', and has a hearing against the same, as seen in Fig. I). These two plates lf and G are soldered to the link against which they rest, the solder being applied on eaoh side ot' the round bars of the link, but only so much solder being used as is'sniiieient to praetieally till the small angles` between the plane surfaces of the plates and the linkbars, as seen in Fig. T. lt is evident that thethickness of the solder will tl'lerefore be very slight at any point, but at the same time the plates will be held with sullieieut strength to the link on aecount of the length of the solder-lines, which extend alohg almost the entire length of the link. ln preparing these devices for use it is desimble to apply the p'lates` Fand G to the link and solder them thereto before applying this fastening to`the sprinkler, so thatI they will he connected to form przietieally a single piece, as seen'in Figs. 5 and f. A small short spring l is fastened to oneof thearmsof the sprinkler-hody,

being Shown in the drawings as Secured to the arm n by insertingr one end in a notch t' eut on the inside thereof. This spring extends inward a little beyond the circumferenee of the cap andstands outa little beyond the orifice of the nozzle, so that when the cap is pressed upon the latter in its closing pesition, as seen in Fig. Il, thisspringwillbe some.-

hatdepressedorbent inward. A distributor .l ol'eireularforni ismounted in frontoftheuozzle, being provided with a eireularopeniugj to receive the cap and with notches'j in the edge thereof en opposite sides to ree'eive the arms a ai, by which it is held in place. In applying Ythese devices, so as to prepare thesprinkler for application tothe pipes, the serew-pin is turned into the cap nearly or quite to its limit. 'lhe cap is then applied to the nozzle and the lever placedin position, itsinner end arranged underneath the notch at the end of the arm o2. 'lhe link prepared as shown in Figs. 5 and G is then applied by slipping the looped end over the outer end of the lever and turning the link inward Auntil itis brought into position shown in Fig. 3 with the re taining-plates just underneath the upper fork of the arm a. The serew-pin is then turned,

einem.

so as to set it outward against the lever until the parts are all tightly strained, the cap being at the same time forcibly held tothe nozzle, this being the position of the parts shown in `Lig. 3.

New when the sprinklers are applied to the pipes in the usual way and a lire occurs the plates l? and are quickly released from the link, first, because the lines of solder are very thin and consequently quickly melted, and, secondly, beeausc the bearings of the .plate G being in different planes the leverage Strain upon them will tend to break thejoint between the two plates by turning them outward at this point, and,obviously, as soon as these plates,whieh act as levers, are released the cap will also be released and water will be driven out through'thenozzle. The spring I being under strain will assist in removing the cap, having a tendency to flip the latter olf from the nozzle as soon as the retaining devices are released, thereby overcoming any tendency of the cap to stick upon the nozzle, owing to long standing or any other canse. This fastening is very strong and secure for reasons stated above and at the same time is very sensitive, so that the desired operation will be certain before a lire gains much headnay in a room in which the sprinklers are placed.

ln some of the details of construction herein shown and described modifications may be made, and I therefore do not wish to be understood as limiting myself to all of thespeeial details herein shown and set forth.

llaving thus described my invention, what i claim as new, and desire to secure by Letters atent, is-

l. In an automatic sprinkler, the closingcap, in combination with the retaining-lever, the open fastening-link E, the arm e', and the retainingplates F G, soldered to the link and having a bearing at the upper portion of the said arm, substantially as and for the purposes specified.

.2. In an automatic sprinkler, the retaininglever l), in combination with the open link E, provided with offsetting seats C, the arm a', provided with the seat (.t, the fastening-plate F, provided with the reeessfat its lowerend, the plate G, having a knife-edge bearing at its upper and lower ends, the former ina plane within that of the latter, and both plates sol* dered to the link, substantially as and forthe purposes specified.

AUGUSTUS F. NAGLE.

Witnesses:

CARRIE FEIGEL, A. M. BEST. 

